The striatum has been identified as a new target for therapeutic deep brain stimulation in the treatment of neurological and psychiatric disorders. The nonhuman primate model offers opportunities for detailed mapping of the behavioral effects of stimulation within the striatum. We recently showed that dysfunction in the dorsal and ventral striatum was able to produce a specific pattern of abnor...

In this work we introduce and evaluate a model of Hierarchical Reinforcement Learning with Parameters. In the first stage we train agents to execute relatively simple actions like reaching or gripping. In the second stage we train a hierarchical manager to compose these actions to solve more complicated tasks. The manager may pass parameters to agents thus controlling details of undertaken acti...

In the 2014 finalised timetable for Sweden 314 operation days had a unique set of trains i.e. a unique traffic pattern. Despite this, the finalised timetable generally provides only one conflict resolved train path for each train, and this train path is to be used for all of the train’s operation days. Further, once the yearly timetable has been finalised train paths may not be changed, causing...

In the last years, the trade-off between flexibility and support has become a leading issue in workflow technology. In this paper we show how an imperative modeling approach used to define stable and well-understood processes can be complemented by a modeling approach that enables automatic process adaptation and exploits planning techniques to deal with environmental changes and exceptions tha...

We look at the problem of using accelerometer in smartphones to detect whether the user is at a metro train station or in a metro train. Currently, we have solutions to detect simple activities, such as sitting or walking. Our work for this thesis investigates the more complex problem of discerning “in-train” from “in-metro-station” activities which internally are composed of several simple act...

The reliability assessment of the railway services is a complex procedure that is affected by many different factors. A railway system is reliable when the trains arrive at their destination within the allowed delay threshold. The objective of this study is to investigate the effect of the infrastructure doubling and electrification on the reliability of the train schedules. In this study, adva...

BACKGROUND There is a general perception that train drivers and conductors may be at increased risk of developing noise-induced hearing loss. AIMS To study job-related hearing loss among train drivers and train conductors. METHODS Audiograms from train drivers and train conductors were obtained from the medical records of the occupational health service of the major Norwegian railway compan...

Information theory is playing an increasingly important role in the analysis of neural data as it can precisely quantify the reliability of stimulus-response functions. Estimating the mutual information between a neural spike train and a time varying stimulus is, however, not trivial in practice and requires assumptions about the specific computations being performed by the neuron under study. ...

Paris, Gare de Lyon, 27 June, 1988, 18:47. A crowded suburban train is ready for departure when, suddenly, another train arrives in front of it. There is a crash with 56 dead and hundreds injured. Obviously the killer train had no brakes. Why? The French government immediately set up a commission to analyse the disaster. This commission published its analysis in a report in September 1988 [1]. ...

At the single-neuron level, precisely timed spikes can either constitute firing-rate codes or spike-pattern codes that utilize the relative timing between consecutive spikes. There has been little experimental support for the hypothesis that such temporal patterns contribute substantially to information transmission. By using grasshopper auditory receptors as a model system, we show that correl...